<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>???</title>
</head>
<body>
	<script>
	var text='fsfs'
	console.log('before define ');
	function useless(clbk){
		console.log('in useless funciton')
		return clbk();
	}
	function get(){
		return text;
	}
	console.log(useless(get));
	</script>
</body>
</html>